In this month’s rankings, React and Vue.js gain, while jQuery and Node.js slip a bit. Note that the increase in AngularJS and the decrease in the AngularJS 2 scores are not indicative of their month to month popularity, but rather, a refinement in the RSIJT scoring algorithm.

This month’s list contains HTML and CSS for the first time. JavaScript, Java, and Python remain the most popular languages. C and its derivatives score highly, and the Apple ecosystem languages, Swift and Objective-C continue to improve in the rankings.

This list deviates a fair amount from the prior list, published one month ago. This is for two reasons. First, I have further refined the algorithm for computing scores. And second, SQL has been added as a language.